An optimized multimedia execution unit configured to perform vectored floating point and integer instructions. In one embodiment, the execution unit includes an add/subtract pipeline having far and close data paths. The far data path handles effective addition operations, as well as effective subtraction operations for operands having an absolute exponent difference greater than one. The close data path, conversely, handles effective subtraction operations for operands having an absolute exponen...

A multiplier capable of performing both signed and unsigned scalar and vector multiplication is disclosed. The multiplier is configured for use in a microprocessor and may include a partial product generator, a selection logic unit, and an adder. The multiplier is configured to receive signed or unsigned multiplier and multiplicand operands in scalar or packed vector form. The multiplier is also configured to receive a first control signal indicative of whether signed or unsigned multiplication ...

A multiplier configured to perform multiplication of both scalar floating point values (X.times.Y) and packed floating point values (i.e., X.sub.1.times.Y.sub.1 and X.sub.2.times.Y.sub.2). In addition, the multiplier may be configured to calculate X.times.Y-Z. The multiplier comprises selection logic for selecting source operands, a partial product generator, an adder tree, and two or more adders configured to sum the results from the adder tree to achieve a final result. The multiplier may also...

A multiplier configured to execute division and square root operations by executing iterative multiplication operations is disclosed. The multiplier is configured to complete divide-by-two and zero dividend instructions in fewer clock cycles by detecting them before or during the first iteration and then performing an exponent adjustment and rounding the result to the desired precision. A system and method for rapidly executing divide-by-two and zero dividend instructions within the context of a...

An execution unit configured to execute vectored floating point and integer instructions. The execution unit may include an add/subtract pipeline having far and close data paths. The far data path is configured to handle effective addition operations, as well as effective subtraction operations for operands having an absolute exponent difference greater than one. The close data path is configured to handle effective subtraction operations for operands having an absolute exponent difference less ...

An optimized multimedia execution unit configured to perform vectored floating point and integer instructions. The execution unit may include an add/subtract pipeline having far and close data paths. The far data path is configured to handle effective addition operations, as well as effective subtraction operations for operands having an absolute exponent difference greater than one. The close data path, conversely, is configured to handle effective subtraction operations for operands having an ...

An optimized multimedia execution unit configured to perform vectored floating point and integer instructions. In one embodiment, the execution unit includes an add/subtract pipeline having far and close data paths. The far data path is configured to handle effective addition operations, as well as effective subtraction operations for operands having an absolute exponent difference greater than one. The close data path, conversely, is configured to handle effective subtraction operations for ope...

An execution unit configured to perform a plurality of arithmetic operations using the same set of operands. These operands include corresponding input vector values in each of a plurality of input registers. The execution unit is coupled to receive these input vector values, as well as an instruction value indicative of one of the plurality of arithmetic operations. In one embodiment, the plurality of arithmetic operations includes a vectored add instruction, a vectored subtract instruction, a ...

A system and method for computing anisotropic texture mapping parameters by using approximation techniques reduces the complexity of the calculations needed to perform high quality anisotropic texture filtering. Anisotropic texture mapping parameters that are approximated may be computed using dedicated processing units within a graphics processor, thereby improving anisotropic texture mapping performance. Specifically, the major axis and minor axis of anisotropy are determined and their respect...

A multi-function look-up table for determining output values for predetermined ranges of a first mathematical function and a second mathematical function. In one embodiment, the multi-function look-up table is a bipartite look-up table including a first plurality of storage locations and a second plurality of storage locations. The first plurality of storage locations store base values for the first and second mathematical functions. Each base value is an output value (for either the first or se...